Question of the Day #264

"With all odds against them, here's how rescuers pulled off 'miracle' Thai cave mission"
From the headline of this article at ABC News.

上記の文で、odds againstの意味は？
In the sentence above, what does "odds against" mean?

答えは、コメントに書いてください。
Write your answer in the Comments.

明日、ここに答えを書きます。
I will add the answer and other remarks here tomorrow.

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解答

意味：
英辞郎によると、


ありそうもない見込み

Answer

Interestingly, the best definition I could find for "odds against" was at PokerZone.com. According to them:

The ratio of negative outcomes compared to positive outcomes, as expected in the long term given a particular situation; as opposed to odds for.